'Gossip Girl' spin-off makes the 80s sound cool again!

KC Bailey / The CW

Brittany Snow and Andrew McCarthy officially sign on to new Gossip Girl spin-off while rumors fly about Losts Cynthia Watros filling the shoes of the Rhodes family matriach. Just think: McCarthy, or as we fondly remember him, the lovable yet overly prepster Blane, as Serena's grandpop and Miss "I got fired because of my Hawaii DUI" Watros as her nanna? Too good.

Brittany Snow and Andrew McCarthy officially sign on to new Gossip Girl spin-off while rumors fly about Losts Cynthia Watros filling the shoes of the Rhodes family matriach. Just think: McCarthy, or as we fondly remember him, the lovable yet overly prepster Blane, as Serena's grandpop and Miss "I got fired because of my Hawaii DUI" Watros as her nanna? Too good. (KC Bailey / The CW)

Brittany Snow and Andrew McCarthy officially sign on to new Gossip Girl spin-off while rumors fly about Losts Cynthia Watros filling the shoes of the Rhodes family matriach. Just think: McCarthy, or as we fondly remember him, the lovable yet overly prepster Blane, as Serena's grandpop and Miss "I got fired because of my Hawaii DUI" Watros as her nanna? Too good.